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Cape Verde, The first cape visited
SigurRosFan
post Oct 4 2006, 11:03 AM
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This first try shows a small Opportunity approaching Cape Verde on Sol 957.

I used James' great colorization pan 'Cape Verde from Duck Bay' (Homepage). Thanks James!

Now five sols later ...
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Aberdeenastro
post Oct 4 2006, 11:53 AM
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The scale of this place continues to confuse me. I thought the cliffs were much bigger than the scale you are implying, but I've done no analysis to back this up!

Aberdeenastro
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RobertEB
post Oct 4 2006, 12:17 PM
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I know what you mean. Back in Eagle crater, I first thought Opportunity was looking at a huge cliff off in the distance.



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Stu
post Oct 4 2006, 01:33 PM
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I believe it's been agreed that the famous "Mystery Men" provide a good sense of scale here...

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(edit of larger image which can be found... oh... somewhere... don't have time to look! Sorry!)


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Ant103
post Oct 4 2006, 01:53 PM
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Hi,

Wow, Mystery Man is back. Hurray! biggrin.gif

So, here is the Sol 956 navcam panorama, build with Autostitch and MMB. This software is very good to make antivigneting and gain compensation (thanks to Mhoward wink.gif).



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MahFL
post Oct 4 2006, 01:58 PM
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I too thought it was a huge cliff, and was a bit dissapointed when it turned out to be a few cm tall. Endurance made up for that though, and now we have Victoria and maybe later some part of Big Crater and its rim.
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jvandriel
post Oct 4 2006, 02:01 PM
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Another view of Victoria.

Taken with the L0 navcam on Sol 957.

jvandriel
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jvandriel
post Oct 4 2006, 02:16 PM
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Here is the view in the drive direction.

Taken with the L7 pancam on Sol 957.

jvandriel
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Aberdeenastro
post Oct 4 2006, 02:18 PM
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Thanks Ant103 and jvandriel for those amazing panoramas. I can't stop looking at them. However, the more I look at them the more I think that the tip of Cape Verde is a treacherous place to be. The Beacon area looks much safer.

Aberdeenastro
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Nirgal
post Oct 4 2006, 02:28 PM
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QUOTE (Ant103 @ Oct 4 2006, 03:53 PM) *
Hi,

Wow, Mystery Man is back. Hurray! biggrin.gif

So, here is the Sol 956 navcam panorama, build with Autostitch and MMB. This software is very good to make antivigneting and gain compensation (thanks to Mhoward wink.gif).



Wow, impressive ponorama !

I too have been trying to use Micheal's MMB viewer lately but didn't succeed in exporting the
luminance corrected images for later use in panorama software (but I must admit that I have not spent
much time reading the docs yet)
How did you do the trick ?
Also, how did you manage to get the level horizon in the panorama ? (autostich usually produces
uneven horizon at the stitching seams and it's very cumbersome to find the right "greek" orientation parameters psi,phi....)
Isn't there also a special feature in MMB that takes JPL metadata in order to correct the exact rover orientation ... would it be possible to use this for the Autostich orientation parameters ?
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Tesheiner
post Oct 4 2006, 02:35 PM
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QUOTE (jvandriel @ Oct 4 2006, 04:16 PM) *
Here is the view in the drive direction.


Given the concerns already raised here and on another thread I hope they don't really drive too much on that direction. laugh.gif
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MahFL
post Oct 4 2006, 02:52 PM
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The Rover drivers know what they are doing. Remember even the tilt paramter of say 30 degrees will stop the rover dead in its tracks. Cabo Verde is not a 90 degree drop off by any means, infact I don't think any of the cliffs are, they all seem to have a slope then a drop. They also have several other s/w parameters to stop a rover driving over a cliff.
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jvandriel
post Oct 4 2006, 02:55 PM
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Tesheiner.
laugh.gif

Nirgal,

for a good as possible match at the seams in the Sol 957 navcam pano I used the
following parameters:

Matching Options:

Sift image:
Min dim ( pixels ): 4400


Ransac Parameters:
Alpha: 3
Beta: 0.1
Max Iterations: 4500

With the Manual Orientation parameters Phi and Psi you can level and straighten the Horizon.

This is most of the time only a problem with the navcam images.
The pancam panoramas are much better.


jvandriel
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Nirgal
post Oct 4 2006, 02:59 PM
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QUOTE (jvandriel @ Oct 4 2006, 04:55 PM) *
Un-needed quote removed - please remember not to quote when replying - it'd save us admins a lot of time better spend on playing with the imagery smile.gif


jvandriel, Thanks a lot for giving the detail info about your settings ... greatly appreciated smile.gif
-> just moved the thread over to the image-tech-forum
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Ant103
post Oct 4 2006, 03:14 PM
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For Nirgal : I discover the method few weeks ago. To have the images corrected for the pan, go into "File > Advandced > Export Pan Images". After, choose the directory and "export".
For the horizon, when it is visible (so, at Meridiani, you often see the horizon...), I take the first image of the pano (the very first at the left) and I calculate the inclination of it. And in Autostitch, I put the inclination number in the "psi" parameter. After, you have to adjust the other parameter if it's necessary (phi for curve the whole pano, theta for bend the pano around the first pic).
This the way I proceed but, some times, by seeing the individual pictures in the finished pano, the horizon is not plane.


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